FOSS gamedev and creative worlds

I was thinking, why isn't there a /reloadmods feature?

Here's what it should do, when issued by an admin, it should basically act like a server restart but while server doesn't go down. A /restart feature would be nice as well.

/reloadmods is nearly impossible because of the design of Minetest.
The only way I can image to implement it is just restart the server without disconnecting the clients.